EP2107306A1 - Verbrennergehäuse - Google Patents

Verbrennergehäuse Download PDF

Info

Publication number
EP2107306A1
EP2107306A1 EP08006508A EP08006508A EP2107306A1 EP 2107306 A1 EP2107306 A1 EP 2107306A1 EP 08006508 A EP08006508 A EP 08006508A EP 08006508 A EP08006508 A EP 08006508A EP 2107306 A1 EP2107306 A1 EP 2107306A1
Authority
EP
European Patent Office
Prior art keywords
casing
combustor
combustor casing
lip
inner casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08006508A
Other languages
English (en)
French (fr)
Inventor
Ghenadie Bulat
Peter Dr. Senior
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP08006508A priority Critical patent/EP2107306A1/de
Priority to CN2009801119848A priority patent/CN101983304A/zh
Priority to EP09728847A priority patent/EP2257742A1/de
Priority to RU2010144521/06A priority patent/RU2010144521A/ru
Priority to US12/933,723 priority patent/US20110011054A1/en
Priority to PCT/EP2009/052199 priority patent/WO2009121669A1/en
Publication of EP2107306A1 publication Critical patent/EP2107306A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/34—Feeding into different combustion zones
    • F23R3/346—Feeding into different combustion zones for staged combustion

Definitions

  • the present invention relates to a combustor casing, in particular of a gas turbine combustor, with reduced deposit formation and reduced hot spots for increased lifetime of a gas turbine engine and for the further diminishment of air pollution such as nitrogen oxides (NOx).
  • NOx nitrogen oxides
  • SU 726428 describes a device for controlling the flow as a function of the temperature of the flowing medium.
  • US 2 763 433 describes L-shaped plates redirecting exhaust gas by closing and opening of an orifice as a function of the exhaust gas temperature flowing through a conduit.
  • US 2 673 687 describes a so-called "duck bill” type valve for controlling and directing the flow of hot exhaust gases as a function of the temperature of the exhaust gases.
  • US 4 245 778 describes a vent control arrangement for energy conservation having bimetallic damper elements mounted in a draft hood, the bimetallic damper elements having alternate bimetal reeds of different initial tension, or alternate orientations, or different flexibility.
  • US 4 441 653 describes a thermally actuated damper for a furnace exhaust gas flue.
  • US 6 039 262 describes a bimetallic actuator for heat transfer applications between a hot stream and a coolant stream.
  • the applicant describes a cooling channel of a combustor casing formed by an inner casing and an outer casing, where bimetallic elements are arranged in the cooling channel on either the inner casing or the outer casing for adjusting a coolant flow distribution as to avoid the formation of hot spots on the inner casing with a minimum amount of coolant.
  • An object of the invention is therefore to provide a new combustor casing for reduced deposit formation and reduced hot spots for increased lifetime and reduced downtime of a gas turbine engine and for the further diminishment of air pollution such as nitrogen oxides. It is a further objective of the present invention to provide an advantageous gas turbine engine.
  • the first objective is achieved by a combustor casing as claimed in claim 1.
  • the second objective is solved by a gas turbine engine as claimed in claim 8.
  • the depending claims define further developments of the invention.
  • An inventive combustor casing comprises an inner casing and an outer casing and a bimetallic element arranged on an inner side of the inner casing.
  • the invention exploits the different expansion coefficients of the materials from which the bimetallic elements are formed so that heating causes them to differentially bend depending on their arrangement.
  • the bimetallic element is arranged within a pre-chamber area and is sized and configured to crack away deposits like carbonbuild-up on a hot gas side of the inner casing of the pre-chamber. If not cracked-away carbon build-up subsequently would start to burn and distort or erode this hot part of the burner.
  • the inner casing has a lip formed as a bimetallic part moving away from an over hot flame.
  • the lip forms a kind of an anchor for the flame.
  • the part of the flow which is inside the pre-chamber is squeezed to a small diameter whereas the part in the combustion chamber can expand to the full space available. Due to the velocity change, the flame may approach the surface high local heat transfer, which is reduced by the inventive movable parts.
  • the bimetallic lip simply bends radially outwardly relative to a longitudinal axis of the inner casing and away from a heat source.
  • a recess is arranged in the wall of the inner casing and located in a wall area of the pre-chamber area, the recess sized and configured to allow the bimetallic lip to bend in the direction of an upper end of the pre-chamber in reaction to the occurrence of a hot spot so that the length of the pre-chamber is reduced, again moving the part away from the flame.
  • bimetallic lip arrangements have the advantages of preventing hot spots without using air and of detaching the carbon as well, since the change in geometry will crack deposits.
  • bimetallic elements react differentially to heat transfer from hot-spots.
  • the self-adjustment reduces the hot-spot temperature and raises the temperature of the rest of the hot casing until the two temperatures approach each other.
  • Another advantage of the inventive combustor casing, where a problem hot spot automatically activates the appropriate bimetallic element, is the threefold increased reliability. Firstly, reducing (or even eliminating) thermal stresses between hotter and cooler areas of the same part can significantly increase part life. Secondly, avoiding contact surfaces between parts in relative motion improves reliability compared to active cooling adjustment systems. Thirdly, there is no need for a (failure-prone) sensor and control system to decide which actuator to operate and by how much.
  • Figure 1 schematically shows a longitudinal section through a combustor.
  • the combustor comprises a burner with a swirler portion 1 and a burner-head portion 2 attached to the swirler portion 1, a transition piece being referred to as a combustion pre-chamber 3 and a main combustion chamber 4 arranged in flow series with a dome portion 19 between the pre-chamber 3 and the main combustion chamber 4.
  • the main combustion chamber 4 has a larger diameter than the diameter of the pre-chamber 3.
  • the main combustion chamber 4 and the pre-chamber 3 are formed by the combustor casing 5.
  • the pre-chamber 3 may be implemented as a one part continuation of the burner-head 2 towards the combustion chamber 4, as a one part continuation of the combustion chamber 4 towards the burner-head 2 or as a separate part between the burner-head 2 and the combustion chamber 4.
  • the burner and the combustion chamber 4 assembly show rotational symmetry about a longitudinal symmetry axis S.
  • a fuel duct 6 is provided for leading a gaseous or liquid fuel to the burner which is to be mixed with in-streaming air 7 in the swirler 1.
  • the fuel-air-mixture 8 is then led towards the primary combustion zone 9 where it is burnt to form hot, pressurised exhaust gases flowing in a direction 10 indicated by arrows to a turbine of the gas turbine engine (not shown).
  • Figure 2 schematically shows part of a combustor casing 5, comprising a main combustion chamber 4 and a pre-chamber 3 in a sectional view.
  • the main combustion chamber 4 and, in particular, the pre-chamber 3 comprises an inner casing 11 and an outer casing 12.
  • the inner casing 11 comprises a lip 14.
  • Figures 3 and 4 show sectional views of part of a combustor casing with bimetallic elements 15 arranged on the inner side 16 of the inner casing 11.
  • no hot spot is present and the bimetallic elements 15 rest against the wall of the inner casing 11. They could of course also be in another position. The main thing is that the bimetallic element has the possibility to bend.
  • the bimetallic elements 15 bend and crack away any carbon build-up responsible for such hot spots, the burning of which carbon could distort or even erode parts of the burner duct.
  • Figure 5 shows a sectional view of the inner casing 11 of a combustor casing 5 with a lip 14 formed as a bimetallic part with bimetallic element 15. In the presence of an overheating source 17 the lip 14 moves away from the heat source, as shown in figure 6 .
  • FIG. 7 A similar arrangement is shown in figures 7 (without hot spot) and 8 (with hot spot).
  • the lip 14 is formed as a bimetallic part 15. But in this arrangement the bimetallic element 15 is arranged on the lip 14 such that the lip 14 can move in an upstream direction, where a recess 18 is arranged, to reduce the total pre-chamber length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP08006508A 2008-03-31 2008-03-31 Verbrennergehäuse Withdrawn EP2107306A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08006508A EP2107306A1 (de) 2008-03-31 2008-03-31 Verbrennergehäuse
CN2009801119848A CN101983304A (zh) 2008-03-31 2009-02-25 燃烧室壳体
EP09728847A EP2257742A1 (de) 2008-03-31 2009-02-25 Verbrennergehäuse
RU2010144521/06A RU2010144521A (ru) 2008-03-31 2009-02-25 Кожух камеры сгорания
US12/933,723 US20110011054A1 (en) 2008-03-31 2009-02-25 Combustor casing
PCT/EP2009/052199 WO2009121669A1 (en) 2008-03-31 2009-02-25 A combustor casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08006508A EP2107306A1 (de) 2008-03-31 2008-03-31 Verbrennergehäuse

Publications (1)

Publication Number Publication Date
EP2107306A1 true EP2107306A1 (de) 2009-10-07

Family

ID=39717733

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08006508A Withdrawn EP2107306A1 (de) 2008-03-31 2008-03-31 Verbrennergehäuse
EP09728847A Withdrawn EP2257742A1 (de) 2008-03-31 2009-02-25 Verbrennergehäuse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09728847A Withdrawn EP2257742A1 (de) 2008-03-31 2009-02-25 Verbrennergehäuse

Country Status (5)

Country Link
US (1) US20110011054A1 (de)
EP (2) EP2107306A1 (de)
CN (1) CN101983304A (de)
RU (1) RU2010144521A (de)
WO (1) WO2009121669A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2460403B (en) * 2008-05-28 2010-11-17 Rolls Royce Plc Combustor Wall with Improved Cooling
FR3065059B1 (fr) 2017-04-11 2020-11-06 Office National Detudes Rech Aerospatiales Foyer de turbine a gaz a geometrie variable auto-adaptative
US11174792B2 (en) 2019-05-21 2021-11-16 General Electric Company System and method for high frequency acoustic dampers with baffles
US11156164B2 (en) 2019-05-21 2021-10-26 General Electric Company System and method for high frequency accoustic dampers with caps

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673687A (en) 1949-08-03 1954-03-30 Chace Co W M Thermostatic valve
US2763433A (en) 1954-10-13 1956-09-18 Chace Co W M Thermostatic valve
US3587232A (en) * 1968-05-16 1971-06-28 Technology Uk Combustion devices
SU726428A1 (ru) 1978-08-03 1980-04-05 Предприятие П/Я В-2679 Сужающий элемент переменного сечени
US4245778A (en) 1979-01-12 1981-01-20 Werner Diermayer Vent control arrangement for combustion apparatus
US4441653A (en) 1981-06-11 1984-04-10 Paragon Resources, Inc. Bi-metallic vane vent damper
US4671212A (en) * 1985-03-22 1987-06-09 Smith Robert W Gas fired heat exchanger for hot water with bimetallic scouring baffle
EP0722065A2 (de) * 1995-01-13 1996-07-17 European Gas Turbines Limited Brennstoffeinspritzeinrictung für mit gasförmigem oder flüssigem Brennstoff betriebene Turbine
US6039262A (en) 1998-09-14 2000-03-21 The United States Of America As Represented By The Secretary Of The Army Passive bimetallic actuator for heat transfer
EP1118806A1 (de) * 2000-01-20 2001-07-25 Siemens Aktiengesellschaft Thermisch belastbare Wand und Verfahren zur Abdichtung eines Spaltes in einer thermisch belasteten Wand

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364969A (en) * 1966-05-10 1968-01-23 American Air Filter Co Combustion chamber air flow control
US4606190A (en) * 1982-07-22 1986-08-19 United Technologies Corporation Variable area inlet guide vanes
US7197880B2 (en) * 2004-06-10 2007-04-03 United States Department Of Energy Lean blowoff detection sensor
EP1936468A1 (de) * 2006-12-22 2008-06-25 Siemens Aktiengesellschaft Bimetallelemente zur Anpassung eines Kühlkanals
DE102007043626A1 (de) * 2007-09-13 2009-03-19 Rolls-Royce Deutschland Ltd & Co Kg Gasturbinenmagerbrenner mit Kraftstoffdüse mit kontrollierter Kraftstoffinhomogenität
US8024932B1 (en) * 2010-04-07 2011-09-27 General Electric Company System and method for a combustor nozzle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673687A (en) 1949-08-03 1954-03-30 Chace Co W M Thermostatic valve
US2763433A (en) 1954-10-13 1956-09-18 Chace Co W M Thermostatic valve
US3587232A (en) * 1968-05-16 1971-06-28 Technology Uk Combustion devices
SU726428A1 (ru) 1978-08-03 1980-04-05 Предприятие П/Я В-2679 Сужающий элемент переменного сечени
US4245778A (en) 1979-01-12 1981-01-20 Werner Diermayer Vent control arrangement for combustion apparatus
US4441653A (en) 1981-06-11 1984-04-10 Paragon Resources, Inc. Bi-metallic vane vent damper
US4671212A (en) * 1985-03-22 1987-06-09 Smith Robert W Gas fired heat exchanger for hot water with bimetallic scouring baffle
EP0722065A2 (de) * 1995-01-13 1996-07-17 European Gas Turbines Limited Brennstoffeinspritzeinrictung für mit gasförmigem oder flüssigem Brennstoff betriebene Turbine
US6039262A (en) 1998-09-14 2000-03-21 The United States Of America As Represented By The Secretary Of The Army Passive bimetallic actuator for heat transfer
EP1118806A1 (de) * 2000-01-20 2001-07-25 Siemens Aktiengesellschaft Thermisch belastbare Wand und Verfahren zur Abdichtung eines Spaltes in einer thermisch belasteten Wand

Also Published As

Publication number Publication date
US20110011054A1 (en) 2011-01-20
EP2257742A1 (de) 2010-12-08
RU2010144521A (ru) 2012-05-10
WO2009121669A1 (en) 2009-10-08
CN101983304A (zh) 2011-03-02

Similar Documents

Publication Publication Date Title
US8434692B2 (en) Flow distribution regulation arrangement with bimetallic elements for adjusting the flow distribution in a cooling channel
EP1655539B1 (de) Oberluftöffnung
CA2634756C (en) Apparatus and method for fuel flow rate, fuel temperature, fuel droplet size, and burner firing rate modulation
US8156724B2 (en) Combustion chamber
US6220030B1 (en) Stirling engine burner
EP2107306A1 (de) Verbrennergehäuse
JPH08284688A (ja) ガスタービンおよびガスタービン燃焼装置
US6811395B2 (en) Combustion chamber assembly, particularly for a vehicle heating device
US9057524B2 (en) Shielding wall for a fuel supply duct in a turbine engine
KR930004629A (ko) 간접 가열식 가스터어빈의 상부장착 연소기
US20080131827A1 (en) Gas Injector
KR101541425B1 (ko) 가스터빈용 연소기 라이너의 냉각 구조
WO2011157662A1 (en) Combustion engine with air-cooled bottom gasket
JP4058681B2 (ja) 過熱低減器
JP2514782Y2 (ja) 熱風発生装置
CN218379380U (zh) 一种燃烧器风量调节装置
JPS61256113A (ja) 面燃焼バ−ナ及びこれを利用した熱交換装置
JP3793815B2 (ja) ガス燃焼装置
US8277214B2 (en) Device for intensifying a flame
US20030202915A1 (en) Apparatus for removal of pollution from gas stream
RU2188983C2 (ru) Камера сгорания
JP2003329221A (ja) ガス燃焼装置
JP2003090516A (ja) ガスバーナユニットとその運用方法
GB2422874A (en) Gas turbine burner expansion bar structure
JP2000205522A (ja) ガス燃料燃焼装置とその運転方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20100329

17Q First examination report despatched

Effective date: 20100429

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20111001